熔盐堆用镍基合金失效机理与改性策略研究进展

王优, 陈向阳, 王煦嘉, 汤春桃, 沈朝, 曾小勤

Progress in Failure Mechanisms and Modification Strategies of Nickel-Based Alloys for Molten Salt Reactors

WANG You, CHEN Xiangyang, WANG Xujia, TANG Chuntao, SHEN Zhao, ZENG Xiaoqin

图4 316L不锈钢在应力状态下的腐蚀开裂行为及应力腐蚀开裂机理示意图[31] (a) cross-sectional morphologies of stress-free sample and creep sample after corrosion in molten salt at 565 oC for 830 and 1068 h (b1, b2) comparisons of thickness of corrosion layer (b1) and corrosion rate (b2) between stress-free sample and creep sample after corrosion in molten salt at 565 oC (c) schematics of stress corrosion cracking mechanism (GB—grain boundary)

Fig.4 Corrosion-induced cracking behaviors of 316L stainless steel under applied stress and the schematics of the stress corrosion cracking mechanism[31]